The interest in organic electronics stems from the ability to manufacture organic films on a variety of very-low-cost substrates such as plastic and metal foils, along with the relative ease of processing organic compounds on large substrates. The most used organic semiconductors are small-molecules and polymers, which can be processed at near-to-room temperature using high throughput techniques like industrial printing. The research on organic electronics by several industrial and academic groups is focused on applications like flexible displays, low cost radio frequency identification tags (RFID), photovoltaic surfaces, sensors, non-volatile memories, photonic switches, spintronics, etc. The first products, as roll-up displays or low-end RFID, are now appearing on the consumer market.
The presentation will give an overview of organic electronics from several points of view. Firstly, I will introduce the topic by presenting the current and expected applications of organic electronics, and I will emphasize the beneficial aspects of the organic materials. After the motivations, I will give a brief description of the charge transport in organic semiconductors. The microscopic charge motion in the organic material will be linked to the macroscopic material properties (i.e. mobility). The latter will enable to understand the peculiar behaviour of organic diodes and transistors as well as their differences with respect to the “conventional” silicon-based devices. The theory will be discussed together with the device measurements. Furthermore, the importance of the interface between different materials as well as its impact on the device performance will be discussed. Finally, the state of the art of organic-based circuits and the new hybrid organic-inorganic emerging technologies will be presented.
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